Socket or receptacle



H. R. SAHGENT AND Y. A. KOULJ socKET 0R RECEPT/mf.

MPLICAHON HLD JAN. fF ISM. 1,334,799. Patented Mur. 23,1920

Inventors: Witnesse: n Howard RSE? cept,

f' f c L. .j 2% C Th Odore H o 92'61" Aiff;` by

Their fttorrjey Application `filed January 27,

To ad 'ui/wm zt may concern Be it known that we, Howiinn R. SAncnN'i', a citizen of the United States, residing:` at. Schenectady, county of Schenectady, State of New York, and Tiinonoiii; A. Koen, u. citizen ofl the United States, residing- :it Schenectady, county of Sclienectiidy, State of New York, have invented eci-tuin new and useful Improvements in Soi-kiste or lleceptacles,of which the follovviinqr is :i speci fcation.

Our invention relates: to .sockets sind re ceptacies for inciindeficent electric liiinpe :1nd the like, and its object is to prevent theft or unauthorized interchiinging, removal, or insertion of Sui-h lampe. Various other nib vantzigcs obtainable in connection with the invention will hereinafter become iippzirent,-such iis simplicity, eti'ength. durability, i'iiggedness, reliability, good .ippeiiriincesind facility and cheaipness of iiniuiifzictiii'c, for eXample,-wliile the scope of the inren tion will be indicated in our claims.

In accordance with oiii' invention, we en construct a socket in which zi liinip is insertecl or fi'om which it is removed .by n. turning movement that ordinarily some lamp engaging part of the socket struc` ture with reference to which the lmnp moet turn during insertion or removal will itself turn more-or lees freely. but thu( euch par! can be prevented from doing- .so by :in iiiithorized person. We linie hereinafter shown and described socket Structures csp Cially intended for innipe or other devices having terminals or baisee of the so-called Edison screw type in which the screw shell that ordinarily forme the principal lamp eli-- ,fg-aging part of the Edison type of socket is rotatably mounted :ind luis engagement means addition-(il to its threads for4 coiictinc' with n special member or key to prevent ii from turning when irhimp to be ineert ed or removed. lVhile, however, these structures are the best for the purposes ot' the invention at p-rceent known to ne, :ind while the invention extends to these partici lar forms of device :ind to their specific features and detziile and combinations und arrangements of parte. ii-i the invention is not confined thereto, but cnn be otherwise carried out und embodied.

In the nccompnyingr drawings, Figure 1 is a. side view 'of n. .qm-kei or receptacle of Specification of Letters Patent.

Patented M ar. 23. 1920. 1914. Serial No. 814,841.

the switcliless type suitable for mounting on n wiill or ceiling, the suine being constructed in accordance with our invention.

Fig. 2 is it similar view with i'liestructure turned to :in :ingle of 90 from the position shown in Fig. 1, certain outer parte being in section.

Fig. 3` is ii vertical midcection through the device and most of its parte on :i pinne of section dili'erent from that of Fig. 2.

Fig. 4 is a. View of certain parte :is eeen when ,viewed in the direction of the arrows from :i pleine ci" ,.riion .coircepoinling to the line 1.1 in bi,` rinsing parte being removed.

Pig. 5 is :i phifn iicw of a pfiiff escoci- :ited with the Screw heli lF i lr. (i to Fig'. 2 illustrating the locking of the socket for removal or insertion of a. lamp.

Figs. 7 und o .fire fragmentary detail views illiietriiting certain feiztiire of construction.

Fig. i) is :i sidevieu' of the principal in terior parts of a key type of socket constructed i'ii accordance with our invention.

Fig. l0 is :i similar View from the lefthnnd side of Fig. 9, certain parte being in section.

Fig. 1l is :i fragmentary view simile-r to Fig. 10 showing certain switch parts in ii di'erent position. i

Fig". 12 is :i plan View of the Switch mechanism with the parts in the positions Shown in Fig. 10, the upper plut of the inclosing structure being,r removed.

Fig. 13 is :t perspective View of certain parte of the switch mechanism by their seliee.

From Figs. 1, 2 and 3 it will be eeen that the device illustrated comprises n buse struc-- ture 1 thiit carries Various conductive parte; :i i'otiihible screw shell contact sind ongegen'ientpiii't mounted on said bite-e; another cont-:ict part y"iw-such :is is commonlyv known as n center contanti-exposed within the screw xshell proper, and iin outer inelosing YShell or casing 4 with an insiilntive linin 5 of fiber or other material. The insulation of the parts carried by the base structure l n n best be secured by making it in a single piece of insulating material such :is porcelain or bisque, and the screw shell portion of the part 2 iind the outside casing 4 can heet be made of brass or other sheet metal, :is

fi, the meint-:ingr oi ini fragmentary detail. similar extend witho a A f usuale' hese parte and their relative .alrrang ent are 1n a general wey quite sim1larto those of various sockets and rece teclee now in ordinary use, so that descrip ion of many of their features may be dispensed with. Prefera'bl the lining 5 rotrudes somewhat beyon the edge of tie casing shell 4, and the screw shell pro r has'its edge well back from the edges o the casing shell 4 and the lining 5 and fits the llmng loosely. This arran ement leaves the screw shell free to turn an at the same time makes it impossible to insert a knife blade between the lump and the Walls of the socket fer enough to jam the screw shell. C

Referring, now,to Figs. 3 and 4, 1t will be seenthat the current connection tothe center contact part 3 comprises a bent strip (i of sheet metal one end of which has in it a screw for the attachment of a current supply wire and the other end of which lies 1n a groove in the lower surface of the hase 1 and carries a downwardly extending hollow internally threaded stud 7 firmly secured in a hole therein and arranged so as to be substantially coaxial with the screw shell part 2. The parts (i and 7 are secured in position by a screw 8 that extends down from the upper side of the base 'l through u central hole `therein and engages the threads in the stud 7. The center Contact part ,3 is mounted directly o n the stud 7 ,-preferably loosely enough to turnv freely-,and is kept from shifting lengthwise of the stud 7 by a shoulder formed by an enlar red upper portion of the stud and by a Waher 9 that lies in a depression in the lower side of said part and is seol ed on the reduced lowermost portion of t- 1e stud by expansion or beading over of the treme end thereof. A disk part 10 of fiber r other insulatin material haw'- ing a centra opening,r throng] which extend parts 3 and 7 fits rather loosely in the bottom of the screw shell proper above the enlargement or fiange at the lower end of the former which forms its engagement portion and insulates the center contact 3 therefrom and keeps th'e parts approximately `coaxial Thus the stud 7 serves as al means for pivotally securing the contact 3 and the part 10 with which it is associated to the hase r1, besides forming part of the current connec ti on to the former. l

The screw shell ortion of the` part 2 has in its upper end or ottom 11 a central opening througln fhich the part 3 and the stud 7 It contact with this shell, there being an upstanding flange or collar 12 at the edge. of this central opening. The engagement means of the screw shell part 2 whereby it can be. pre-vented from turningl comprises a plurality of shoulders or pro- .jections`13 formed by the sides ofnotch or groovedike recesses 14 at the edge" of a circular disk 15 'so secured to the upper end or bottom 11 of the screw shell roper that relative turning of the shell antFthe disk is revented. As shown in Figs. 3 and 5, the isk 15 has a central opening that lits' over the flange 12 of the shell proper and also a lurality of notches 16 that receive punche up portions 1? of the shell bottom 11 (Fig. 3l. and the upper end of the flange `12 is ene panded or beaded over on an annular metal ic member or washer 18 at the upper side of said disk. '.Ihe turned over edge of the Han fe 12 lying almost a ainst the flat lower sur ace of the base 1 an the part 10 fitting in and festin against the bottom of the shell propel', tie screw Shell contact part 2 as a whole is pivotally secured to the base by the stud 7, so that while it is quite 'free to turn it is at the same time securely held and completely insulated. The rigidity and fixity of the center contact 3 in an axial direction with reference to the shell part proper tends to insure a tight bottomin y of the lamp against it when screwed in, am the disk part 10 can readily be made strong enough to prevent injury from screwing in of the lamp too tight.

It is preferable that the key member enpaging shoulders 13 should be insulated rom the lamp engaging threaded shell proper, in order that the key member may not by any possibility become electrilied or canse ashort circuit. This can be most easily accomplished by making the whole disk 15 of indurated fiber or other suitable insulating material and utilizing the annular part 18 as a contact for making electrical connection with the shell proper Without interference with its rotation. As shown in Figs. 2, 3 and L1, the connection is ell'ected by means of a curved contact strip 19 of cold rolled copper or other resilient metal arranged in an appropriatel shaped recess in the lower surface of the ase l with its ends bent upward s0 as to rub against the annular contact means 18. The contact. 19 is clamped in place beneath an irregularly bent strip Q0 of sheet metal corresponding to the strip 6 that is secured to the hase 1 by a screw 2l. in very much the same Way. Besides carrying current,the spring strip 19 insures against rattling of the artsQ, 3 and 10 on the stud 7 or against t e baseA I.

We have already referred to the use of a key member for lookin the screwshell partrz against turning w en a lamp is to be inserted or removed. In the device shown, the locking is very simply effected by direct engagement of the ke .22 itself with one of the shoulders 13 of t e recessed disk 15 (see Figs. 2 and 6), without the intervention of any bolt, catch, or other inv.

Vtermediate mechanism, while securit is assured by so locatingr and arranging t e keyhole means of the casing 4v with reference to the engagement means 13 and 15 that lll) aftvr initial insertion as far as posnihio hij 22 must be otherwise mover! to bringit into position io engage said maaar; S,

:nnans Ewing priivrahiy proa'ichefi to hold the; hay against movoment iu either direction by liu;` riig'agument means 13 when thais; ass@ riaied with the vasing 4. This can Louronv irzitlxi' be accomplished hy a ha rrier that tho entering key must pasa at an anglo to iis position when eiifragedrso that the key must be turned arf-.ter passing tho saine,-w in conjunction with :means or preventing turning of the hoy whim enraged. or aveu when about to engage.

As shown in Figs. l, 2, 6 and 85 there is an irregular liejholhx slot 23 in a Hattem-fi portion 24 at one Side of the 'main Wali of the casing 4 arranged so that the key emol-s it ransvorsely with reference. to the Xis of rotation of the screw shell part 2 anti 'a ou in i! is in its pro )or engaging vposition. anti fluire is a similar hey-hole slot 9.5 in an outer barrier wall 26 formed by the bottom of a. shoot metal cap 27 secured to thv Casin i hf; iongiimlike extensions 28 of ita own la that pass through hohes in the svai Q4 anzi am heut over, and a barrel or shield part 29 with a longitudinal groov0 for the fiat stv-m 30 of the shoot. metal heir Q2 is moan wi hwtwlen thr Walla 24 and 2o with its own rmluccd ends in holas al tho :approximately suiwrposed Corresponrliiiif onus m fine @lots 23 and 25 (Figs. and 8).. The slots 23 and 25 are arranged at a 90" angl fo one anot im'. so that the barrier wail 26 necessitates turning of the hay after iis` initial insertion, and the Cylindrical. 'Wall of [im cap 27 is so located with reference to tiw outer ends of the slots 23 and :is to ari-@sf the suitably bent web 3] o1' the hoy :22 iu the. propnr position for entf-ring thv {wmf-r or heilig witl'idrawn through tho hiitcr. A shouhlf'r 32 on the key haiulo prow-ntfs the:` passing Iii-'vomi 'Thrr wail 2.4' wlmi entering the innwlfovhole alot zl auf! so insures that the hay 9:31 shali ho kept from 'turning by it# ofigisu ii' it happen-ai that no notch 14 is oppohil'r tha imma' hej holo Q3 when the key 2:2 commi into imaging pon-Miou, the inward movement of ih. hvj. will he stopped by the edge if ih disk i5 (Fig. :33) ti I thi lntvr is Suitahly turnml hij; manipuhitiou of thvy lamp (Fig. (i) or oi' the mfrmv Shelli part 2 itself.

Tho key-hole means shown and jimi; fio- ;wiiheil is very simple and ohra); to man!!` 'arturv while at the sans@ time quite- Soiui'o againclf tho thief. The fliiiiuultim of thflft zum Eftrfmsifhuahiy incrufwoii hy providing oai-rh: within the cap V i witimsit iiiiher'wiiw iurrmisiug the Cost simo m'ru rahor mmplii-alffl km' forms can 'ne yuinrhmi hud heizt from sheet metal nt a simil@ operation.

Heim-ring. now, to thi; swiirh aoc-kei von strumicm illustratori in Figs .Q to FLL it wiil :erh is a base structure 101 that ff'tch mechanism and var-imm udire parts, a screw shell Contact #merit part 102 rotatively moantwl i rase lllh and a center Contact pari as .in the receptacle aready dr-W ha rontzwt parte 102 and 16:3 are io zforresponding parts 2 ami 3 ofthe 'oo-optado airriady described, and the parti: Jffh f?, EN* MO, otr., and their mhitioiis to thier ami to the. structure 101 am j a gmini 5h EL 1), 20, oto., (Figo. :2, Si and eil?. The stud 107 that serves im thv sacuriig of various parta and as a portion of thi.' riwreut mumwition to the j-oistur oontart rss from the .Stud 7 oniy in being soin; ti isgiper emi Wharf', it is riveted imo ,nato or strip 10B aud'iu being Wifi out ii. ,mail ihrraada.

Tia zsh striwture 10i is in lower anti up 141 having recesses in wlxivh ioxm a Saharaui NQ for the :switch xirai connue-tion to Y i. mad@ and broken. The par?, .a that arrivi the htuf'l 107 am? hilnm this contar" no: ad iii-l swared in any suitable war 2.o iin; Pom-fr hifi@ of (1hr hover part ifi-0 i r* i iig ome app-2r Side exposer? in ihn switch chaaijr MQ Where it may he fiii'artly mi h5.' the movable rontact mem hm* ,i455 of ho switch mechanism. Tho ewiirh awchanism romprises u Sort oi' U-v s-vhapefl frana, i'irinrv 144 ha ving a. lug 145 hy moana of which ii is screwed to the oppor haw part lil, a pair of guide )mrtions bxLG having Hong-ated holes 14T that afford hearing .for tien opsjfrzitiiig #haft M8 on whirl] is tin handfe HQ, and :1 www for the attach man' oi a wirr-nt supply conductor. Tini movable f im oivlzusif;

parta -h' and amiing faires "ii chamber ina. whim* T5/niort 14:5 oormists of rfrriangniar were oi o2-etal mounten? between jars MG and having an iongated with ihr: sides of which engage pro .us on thv portion of tha shaft 14R am iharflhrougfli.. A dish 1552 having im* thi-.f nidos Hb is arranged ahoi a thv contar omnia 1473 and is continually.' urgod downward hy :i apiral Spring 15:3. Thr: Grain; i raaf-is with the flat surfarrsi if the pars 1G23 and 152 and of the contar: iucmlm 142;@ to giri. the switch a snap action tha iiixiu'vsi :i Quirk break, and it also insiirfa a Fuori eeleauuirai' connection from thi` pari E44 to the part IUC when the swil'rh ii in tia;` on position Shown ,in Fig. l.

I wili rearliiy bfioon thatwith tiagoo ai am?, arrahpjwmiint ilastraieli lha ri A:C roiinwtifiiw to the www shell mul if: the f im' nailart 10S-3 do not in thv hraze'l" ioerir-ir with Uu imitation o? th@ www bhhii wutaff. lari i012, Slo hi a errant lflfi of a key to engage said additional engagement means and prevent turning of said part, said ke -hole means being so located and' arranged' with reference to said additional engagement means that after initial insertion as far as possible the ke must be otherwise moved therein to bring it into position to engage said additional engagement means, `and. there being means for holding the key against movement in either direction by said additional engagement means when in such position.

2. A socket or ieceptaclefor incandescent lamps and the like comprising a rotatively mounted 'part having engagement means adapted to be brought into en agement with a lamp by relative turning o the lamp and said part and having additional engagement means, and a casing inclosi said part and having key-hole means for t e introduction of a key to engage said additional engagement means, said key-hole means comprising a barrier which the entering key must pass at an angle to its engaging osition, so that the key must be turned a r passing the same, `and also comprising means for preventing turning of the key when engaged.

3. A socket or receptacle for incandescent lamps and the like comprising a rotatively mounted part having engagement means ada ted to be brought into engagement with the am by the relative turning of the lamp and sai part and having additional engage ment means, and a casing inelosing said part and having key-hole means for the introdnc tion of a key to engage said additional engagement means and prevent turning of said part, said key-hole means comprising inner and outer walls with keyholes therein so located and arranged that after vinsertion of the key in the outer keyhole a portion there-- of must be moved between the walls to allow the key to enter the inner key-hole and bring it in position to engage said additional engagement means.

4. A. socket or receptacle for incandescent l' lamps and the like comprising a rotatively mounted part having engagement means adapted to be brought into engagement with a lamp bygrelative turning of the lamp and said part Vand having additional engagement means, and a casing inclosing said part and having'at its side key-hole means for the introduction of a webbed key transverselyA with reference to the axis of said rotatively mounted part to engage said additional engagement means and prevent turning ofthe said part, said key-hole means comprising inner and outer walls with keyholes therein arranged at an angle to one another, so that after insertion of the key in the outer one it must be turned therein with its web between said walls to permit it to enter the inner one, said inner keyhole being so located with reference to said additional en agement means that as the key enters sai inner wall its web will come into position to engage said additional engagement means and that the edge of said inner wall will prevent turning movement of the key.

5. A socket or receptacle for incandescent lamps and the 1i e comprising a rotatively mounted art having engagement means adapted to e brought into engagement with a lain by relative turning of the lamp and sai part and having additional engagement means, a casing inclosing said part and having a key-hole 1n its wall so located and arranged that when entered therein the key is in position to engage said additional engagement means and prevent turnin of said part, and a cap of sheet metal Ehaving in its bottom a key-hole arranged at an angle to said first mentioned key-hole secured to said casing over said first-mentioned keyhole, there being between the bottom of said cap and the walls of said casing space for movement of the web of the key.

6. A screw shell contact pai-t adapted to be rotatably mounted upon the base of a socket or receptacle comprising a screw shell proper having in its ottom an openin with an upstanding flange at its edge and a disk of insulating material having an opening through which said flange extends and secured against the bottom of said screw shell proper by an expanded porq tion of said flange, said shell and said disk being secured against relative turning, and said disk comprising engagement means for coactin with corresponding means ated `:vith a stationaryT part of the socket to prevent turning oi said shell and also having on its side which is turned away from the bottom of the shell annular me tallic contact means in electrical connection with the shell.

7. A socket or receptacle` comprising a base, a screw shell contact part itself comrising a screw shell proper and a disk of insulating material secured to the end of said shell and having a central opening and recesses at its edge, a part of insulating inaterial itting looselyin said screw 'shell proper of larger diameter than said open ing, a center contact associated with said part and exposed in said screw shell, means extending through said opening whereby los said insulating part and hence said screw filiali Contact part arc pivotally sccnrvd tn said base, said lneann serving as an elcfrical ccnncctinn 'for said centm Contact, means cari-imi by said has@ fm making clnciical connection with said screw shell without in Zcrfcrnnce with its rotation, and a casing inclosing said screw shell and having an o ienin; fui' Llw innci'tiun of a key *for lociiing Said :sci-ew shell Contact part against tu1n ing by means of said i'cccsned disk.

A Socket o1' receptacle `cornlrising a busen n ncrew shell Contact part, a center Contact part associated therewith and posed in the screw shell, mid screw shell intact part being rotativcly mounted but having engagement means fm1 coacting with corresponding engagement means associated willi stationary socket parc tu prevent l'z-nn rotating, means carried by anni has@ fui' making uniform sliding and electrical connection with said screw shell without interference. with iis rotation, switch moans carl-lei! by said base im' making and breuk ing electrical connu-Urin with Sait! center cunt-act part alst without intm'fclcnmi with ihn rotation of thc svirw slicll, anrl a naming' inclnsing said base :mel said screw shell.

In witness wlifcivnlE we have hereunto sc-t oni' lianfls this (5th \la mi' January, lill l.

HOWARD R. SARS-ENT. THEUDURE A. KOCH.

Vv' tncss BENJAMIN B. HULL; HELEN Onnonn, 

